Play as a lone knight and journey to the Dark Citadel to battle powerful Titans and free your people in Chair's visually stunning combat game, Infinity Blade. We also have an app that allows you to animate only portions of your videos, and a business app that allows you to view, create, edit, and share Office documents.

All app prices are subject to change at any time and without notice regardless of stated free duration. Price changes are solely under the control of the developers.

iPhone:

Bubble Galaxy with Buddies Ad-Free ($1.99 → Free, 45.9 MB): Battle head-to-head with friends, family, or complete strangers in this multiplayer bubble shooter. Before the game begins, you're able to choose your character and different power-ups. Then take aim and fire at the bubbles to match three or more. Try to score as many points in the three 60-second rounds as possible. The game includes built-in chat, push notifications so you know when it's your turn, and a variety of challenges to complete.

Bubble Galaxy with Buddies Ad-Free is available for free for a limited time. It has a 4.5-star rating with a total of 811 ratings.

RPGenie Photo Booth ($1.99 → Free, 3.4 MB): An entertainment app designed for old-school RPG fans. It's able to turn any of your photos into an RPG battle by placing an overlay on the top. You're able to customize the overlay with your own text, seven colors, and up to four "party" members. You can also give your photo that 8-bit feel by tapping on the flame button in the top right corner of the screen to apply a filter. Your RPG-ed photos can be shared via Facebook, Twitter, or Instagram.

RPGenie Photo Booth is available for free for a limited time. It has a 4.5-star rating with a total of 26 ratings.

Taskable ($1.99 → Free, 1.4 MB): A slick and simple task manager. You're able to create new tasks with a tap, and reorder those in your list by tapping and dragging. You can also tap on the open checkmark box to marks tasks as complete, tap on a task to edit, and swipe right to left to create a whole new list of tasks. Tap and hold on a task to reveal its properties, including due date, priority level, and sharing options.

Taskable is available for free today only (02/14). It has a 5-star rating with a total of 6 ratings.

Focality! all inclusive ($0.99 → Free, 17.4 MB): Add a dramatic zoom effect to your favorite photos with this fun photography app. You're able to import any photo from your library or snap a new one in app. Then pick the focal point of the photo, and Focality will automatically create three additional frames that progressively zoom in. You can further refine your creation by adjusting the zoom level and placement of your subject. The app also includes a ridiculous amount of frame layouts to choose from, and the ability to share your creations via Instagram, Twitter, or Facebook.

Focality! all inclusive is available for free today only (02/14). It has a 4.5-star rating with a total of 17 ratings.

runtastic Heart Rate PRO ($0.99 → Free, 6.0 MB): A fitness app that turns your iDevice into a personal heart rate monitor. When measuring your heart rate, just place your index finger over your iDevice's LED flash and camera. The app will display your current BPM in real-time during the test. When the test is complete, you'll have the chance to record when you measured your heart rate, how you felt, and attach any other details. Results can be shared via Facebook, Twitter, or email. The app also includes a daily reminder option, and history that can be filtered.

runtastic Heart Rate PRO is available for free for a limited time. It has a 3.5-star rating with a total of 42 ratings.

Universal:

Echograph — Create Cinemagraph Animated GIFs ($0.99 → Free, 42.0 MB): Animate only portions of your videos with this wildly entertaining photography app. You're able to capture a new video in-app or import one from your library. Trim the duration of the video down to less than five seconds to make it more manageable. A still frame must be selected from the video to set the background. You can then paint in the portion you want animated with the tip of your finger. A mask view is available to help you create more detailed animations. Then share your final creation via Facebook, Twitter, or Tumblr.

Echograph — Create Cinemagraph Animated GIFs is available for free for a limited time. It has a 4-star rating with a total of 319 ratings.

Infinity Blade ($5.99 → Free, 595.2 MB): Journey to the Dark Citadel to battle powerful Titans and free your people from an endless legacy of darkness in this visually stunning combat game. Swipe across the screen to perform attacks, dodge blades, block hits, and cast devastating spells. As you make your way deeper into the castle realm, you'll have a chance to upgrade your knight and collect new weapons and armor. The game includes gorgeous 3-D graphics powered by the Unreal engine, online multiplayer, and achievements and leaderboards via Game Center.

Infinity Blade is available for free for a limited time. It has a 4.5-star rating with a total of 16500 ratings.

Asphalt 7: Heat ($0.99 → Free, 1.2 GB): Speed across the globe in this high-octane racing game from Gameloft. Jump behind the wheel of 60 different world-class vehicles and try to be the first one to cross the finish line. You're able to steer your car by tilting your iDevice, and you can tap on the screen to brake and deploy boosts. Collect the cash that's scattered about each course and use it to purchase power-ups. The game also includes 15 tracks set in real world environments, six modes, local multiplayer, Duo Gamer gamepad support, and online leaderboards.

Asphalt 7: Heat is available for free for a limited time. It has a 4.5-star rating with a total of 29718 ratings.

Bubble Pig ($0.99 → Free, 11.1 MB): A bouncy platformer from Donut Games. Guide the bouncing Bubble Pig through each level by tapping the sides of the screen to move left and right. You must activate all of the lights in a level to complete it by stomping on the red switches. Try to collect all of the fruits and coins in each level to earn a high score. Just watch out for those sly foxes! The game includes 60 levels, and achievements and leaderboards via Game Center.

Bubble Pig is available for free for a limited time. It has a 4.5-star rating with a total of 494 ratings.

Smart Office 2 ($10.99 → Free, 23.9 MB): View, create, edit, and share Office documents with this productivity app. The app is loaded with features, including a variety of formatting and font options, preloaded templates, search, AirPrint support, the ability to export files as PDFs, and Dropbox and Google Docs integration. It also supports a wide variety of file formats.

Smart Office 2 is available for free for a limited time. It has a 4-star rating with a total of 3166 ratings.

That concludes today's issue of Apps Gone Free. If you like staying on top of these daily deals, don't forget to check out our free AppsGoneFree app. It provides all the deals each day, and even an archive of past deals that are still active.

Developers:

If you are a developer who would like to get your app included in our “Apps Gone Free” daily lists, here’s our basic set of rules:

It must have at least a three-star average rating at the time it goes free.

The app must not have been free numerous times (3+) over the last six months.

The free version of your app must not include ads.

To submit an app, simply send a request to [email protected] with the subject “Apps Gone Free.” Please include the name of the app, a link to it in the App Store, when and for how long you intend to offer the app for free, and anything else you would like to share. We will take it from there.